APA (7th ed.) Citation

Cicero, M. T., & Grant, M. (1971). On the good life. Penguin.

Chicago Style (17th ed.) Citation

Cicero, Marcus Tullius, and Michael Grant. On the Good Life. London: Penguin, 1971.

MLA (9th ed.) Citation

Cicero, Marcus Tullius, and Michael Grant. On the Good Life. Penguin, 1971.